CN205494565U - Low remaining syringe that dispenses of liquid medicine - Google Patents
Low remaining syringe that dispenses of liquid medicine Download PDFInfo
- Publication number
- CN205494565U CN205494565U CN201521027003.0U CN201521027003U CN205494565U CN 205494565 U CN205494565 U CN 205494565U CN 201521027003 U CN201521027003 U CN 201521027003U CN 205494565 U CN205494565 U CN 205494565U
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- CN
- China
- Prior art keywords
- piston
- syringe
- liquid
- cylinder
- extrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 239000003814 drug Substances 0.000 title abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 18
- 230000000712 assembly Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 231100000703 Maximum Residue Limit Toxicity 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Abstract
The utility model discloses a low remaining syringe that dispenses of liquid medicine, including cylinder subassembly and piston assembly, the cylinder subassembly includes the cylinder main part, connects the spliced pole and the cylinder handle of syringe needle, piston assembly is including piston rod and the piston handle of taking the piston, the piston lateral wall on to be provided with at least round sealed protruding stupefied, when the piston pushes away to the top, the space that forms between sealed protruding stupefied, piston up end and the cylinder main part is liquid storage part, the cylinder main part on be provided with with liquid storage part shape, size and the position assorted portion of extruding. The utility model discloses following beneficial effect has: 1, through the improvement to the cylinder main part, be provided with in the cylinder main part with the liquid storage part assorted portion of extruding, can be effectively extrude the cylinder with liquid storage part's residual medicine liquid, reach low residual medicine liquid 's purpose, 2, extrude the pole through setting up on the piston up end, realize extruding the cylinder main part with the liquid medicine in the spliced pole, reach low residual medicine liquid 's purpose.
Description
Technical field
This utility model relates to a kind of dispensing injector with pin tool, is specifically related to the dispensing injector with pin of a kind of low liquor residue, belongs to
In technical field of medical instruments.
Background technology
The most common making up a prescription, anaesthetize and instrument used for injection, most use syringes, syringe generally comprises and includes
Syringe, syringe handle, the piston rod of band piston and piston handle.During piston rod pumpback, in syringe, form negative pressure, thus will
Medicinal liquid sucks syringe；When pushing away before piston rod, piston is by medical liquid squeezing syringe.In view of the sealing of piston, existing piston
It is provided with a circle seal convexity on sidewall, increases the seal of piston and syringe.Therefore, some problems are created: 1, seal
Form space between protruding upper end and syringe, cause syringe inner liquid medicine residual too much；2, head face hump formula syringe, due to syringe end
Face is protruding, and forms space between piston, causes liquor residue；3, the connection post void of syringe front end connecting needle is relatively big,
Cause liquor residue.And regulation 10ml specification maximum residue limit is 0.20ml in GB25820-3002 syringe GB, 2ml specification
Following maximum residue limit is 0.07ml.Dispensation injection needle the most on the market, can not meet requirement mostly.
Summary of the invention
The invention aims to provide the dispensing injector with pin of a kind of low liquor residue, to solve the above-mentioned of prior art
Problem.
It is an object of the invention to be achieved through the following technical solutions.
The dispensing injector with pin of a kind of low liquor residue, including syringe assemblies and piston component, described syringe assemblies includes pin
Cylinder main body, the connection post of connecting needle and syringe handle；Described piston component includes piston rod and the piston handle of band piston；Described
It is provided with at least one circle on piston side wall and seals convex stupefied；When piston is pushed into top, convex stupefied, the piston upper surface of described sealing and pin
The space formed between cylinder main body is liquid storing part；It is provided with in described syringe main body and liquid storing part shape, size and location phase
The extrusion portion of coupling.
Mould is passed through by syringe main body one-body molded when described extrusion portion is produced.
Described piston upper surface is additionally provided with extrusion bar, described extrusion bar be connected post cavity shape, size and location
Match.So that the residual liquor extrusion that will connect in post.
The method have the advantages that 1, by the improvement to syringe main body, be provided with in syringe main body and store up
The extrusion portion that liquid portion matches, effectively can extrude syringe by the residual liquor of liquid storing part, reach the purpose of low-residual medicinal liquid；2、
By arranging extrusion bar on piston upper surface, it is achieved by connecting the medical liquid squeezing syringe main body in post, reach low-residual medicinal liquid
Purpose.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
In figure: 1, syringe main body 2, connect post 3, piston 4, piston rod 5, seal convex stupefied 6, liquid storing part 7,
Extrusion portion 8, extrusion bar.
Detailed description of the invention
The construction features of the present invention is expanded on further below in conjunction with the accompanying drawings with specific embodiment.
The dispensing injector with pin of a kind of low liquor residue as shown in Figure 1, including syringe assemblies and piston component, described syringe
Assembly includes syringe main body 1, the connection post 2 of connecting needle and syringe handle；Described piston component includes the piston rod 4 of band piston 3
And piston handle；It is provided with at least one circle on described piston 3 sidewall and seals convex stupefied 5；When piston 3 is pushed into top, described sealing
Convex space stupefied 5, that formed between piston 3 upper surface and syringe main body 1 is liquid storing part 6；Be provided with in described syringe main body 1 with
The extrusion portion 7 that liquid storing part 6 shape, size and location match.
Described extrusion portion 7 is one-body molded by mould when syringe main body 1 produces.
Described piston 3 upper surface be additionally provided with extrusion bar 7, described extrusion bar 7 be connected the cavity shape of post 2, size
Match with position.So that the residual liquor extrusion that will connect in post 2.
Dispensing injector with pin after being improved by this structure, the liquor residue amount of 2ml specification is less than or equal to 0.02ml；10ml
The liquor residue amount of specification is less than or equal to 0.05ml.The liquor residue amount of other each specifications all declines to a great extent, and at least declines 50%.
Claims (3)
1. a dispensing injector with pin for low liquor residue, including syringe assemblies and piston component, described syringe assemblies includes syringe
Main body, the connection post of connecting needle and syringe handle；Described piston component includes piston rod and the piston handle of band piston；Its feature exists
In: it is provided with at least one circle on described piston side wall and seals convex stupefied；When piston is pushed into top, convex stupefied, the piston of described sealing
The space formed between upper surface and syringe main body is liquid storing part；It is provided with in described syringe main body and liquid storing part shape, big
The extrusion portion that little and position matches.
The dispensing injector with pin of a kind of low liquor residue the most according to claim 1, it is characterised in that: described extrusion portion leads to
Cross when syringe main body produces one-body molded by mould.
The dispensing injector with pin of a kind of low liquor residue the most according to claim 1, it is characterised in that: described piston upper end
Face is additionally provided with extrusion bar, described extrusion bar be connected post cavity shape, size and location matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027003.0U CN205494565U (en) | 2015-12-10 | 2015-12-10 | Low remaining syringe that dispenses of liquid medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027003.0U CN205494565U (en) | 2015-12-10 | 2015-12-10 | Low remaining syringe that dispenses of liquid medicine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205494565U true CN205494565U (en) | 2016-08-24 |
Family
ID=56721523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521027003.0U Active CN205494565U (en) | 2015-12-10 | 2015-12-10 | Low remaining syringe that dispenses of liquid medicine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205494565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597194A (en) * | 2015-12-10 | 2016-05-25 | 上海宝舜医疗器械有限公司 | Dispensing syringe with low residual medicine liquid |
-
2015
- 2015-12-10 CN CN201521027003.0U patent/CN205494565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597194A (en) * | 2015-12-10 | 2016-05-25 | 上海宝舜医疗器械有限公司 | Dispensing syringe with low residual medicine liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |